It will accept other subject headers, but for the most part, only the test messages go through. I'm thinking that I have the world's suckiest newsfeed (excuse my language). I've also checked a few other web-based newsgroups, but nothing has worked so far. A bit annoying. I'll get over it soon, I suppose, maybe - okay, I'm over it
But if y'all find something worthwhile, please let me know!